Evaluate the expression, or state that the expression is not a real number.
\[
\sqrt{16}
\]
Select the correct choice below and, if necessary, fill in the answer box to complete your answer.
A. The expression is a real number $\sqrt{16}=$
B. The expression is not a real number.
The expression is a real number: \(\sqrt{16} = 4\)
Step 1 :Find the square root of 16: \(\sqrt{16}\)
Step 2 :The expression is a real number: \(\sqrt{16} = 4\)